Even experts need occasional help with telecom terms. We have combined glossaries from several sources to simplify finding the definitions you need.
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See Street Address Guide.
See Special Billing Number.
Scheduling Availability Inquiry
A Verizon Wholesale pre-order transaction that is used to check installation dates, in order to negotiate appointments prior to processing a 'plain old telephone service' (POTS) LSR.
See Service Code Online Report.
See Service Control Point.
A networked computer that stores information and makes it available upon request to client programs that may be located on other computers. "Client-server" computing is the basis of virtually all local area networks and the World Wide Web.
Service Access Code (SAC)
A Service Access Code is also known as a Numbering Plan Area (NPA). There are two general categories of NPAs:
Service Analyzer Inquiry
A Verizon Wholesale local pre-order transaction that allows a Reseller to quote rates for the Personal Unlimited Plan (PUP) to their residence end users in New York, New Jersey and Pennsylvania only.
Service Code Online Report
This Web based application displays a complete list of product/service ordering codes for a Verizon location, based upon the state tariff and facilities capabilities for that area. It is used in the Verizon West region.
Service Control Point (SCP)
The node in the common channel signaling network to which informational requests for service handling, such as routing, are directed and processed. The SCP is a real time database system that, based on a query from a service switching point (SSP) and via a signaling transfer point (STP), performs subscriber or application-specific service logic; then sends instructions back to the service switching point on how to continue call processing.
Service Management System (SMS)
A Verizon system that allows provisioning and updating of subscribers and services in near real time for administrative and billing purposes.
Service Order Analysis and Control (SOAC)
An operational support system implemented by Verizon to coordinate the provisioning order management process. SOAC schedules and manages tasks performed by provisioning systems such as facility assignment, circuit design and network activation.
Service Order From SOP Inquiry
A Verizon Wholesale local pre-order transaction that allows the CLEC to retrieve a pending service order from the service order processor.
Service Order Identification Number (SOID)
A unique service order number is issued each time a service order is requested.
Service Order Image (SOI)
The description of an end user's request for telephone service as represented by several Verizon North end user contact systems. The SOI contains end user information such as billing information, service needs, desired listing, etc.
Service Order Management Administrative Report Tracking System (SMARTS)
A network system used by Verizon North to administer and track service orders that require technician dispatch.
Service Order Processor (SOP)
One of several systems used by Verizon to process service requests.
Service Provider (SP)
A company that provides telecommunications services. Includes Verizon, along with other Incumbent Local Exchange Carriers (ILECs), along with Competitive Local Exchange Carriers (CLECs), Long Distance Carriers and Commercial Mobile Radio Service (CMRS) Providers.
Service Switching Point (SSP)
A Signaling Point that can launch queries to databases and receive/interpret responses used to provide specific customer services.
Serving Wire Center
The first local exchange carrier wire center to which facilities are connected on the terminating path of a call proceeding from the customer premises to the terminating end office.
Shielded Twisted Pair (STP)
Two-pair wire medium used in the transmission of several different protocols. STP is capable of supporting CDDI for link distances of up to 100 meters. These wires have a layer of shielded insulation.
Signal-to-Noise Ratio (S/N Ratio)
The ratio of the signal power to the noise power at a point in a system (usually expressed in decibels).
Signaling Point (SP)
A node in the CCS network that originates and/or receives signaling messages, or transfers signaling messages from one signaling link to another, or both.
Signaling Point of Interconnection (SPOI)
The Interexchange Carrier-designated location, in the same LATA as the local service provider Signaling Transfer Point, where SS7 signaling information is exchanged between the telephone company and the Interexchange Carriers.
Signaling Point of Interface
The customer-designated location, in the same LATA as the local service provider Signaling Transfer Point, where SS7 signaling information is exchanged between the provider and the customer.
Signaling Repeater Loop
Line quality enhancement equipment that detects and regenerates signaling states.
Signaling System 7 (SS7)
A digital data network carrying signaling information that interfaces with the telephone company voice/data network for services using the American National Standards Institute (ANSI) Common Channel Signaling (CCS7) protocol. Also known as CCS/SS7.
Signaling System 7 Network
A digital data network carrying signaling information that interfaces with the telephone company voice/data network for services using the American National Standards Institute (ANSI) Common Channel Signaling (CCS7) protocol.
Signaling Transfer Point (STP)
A specialized switch that provides SS7 network access and performs SS7 message routing, screening and transfer of signaling message through the common channel signaling network.
Singing Return Loss (SRL)
The frequency-weighted measure of return loss at the edges of the voiceband (SRL Low, 260 to 500 Hz and SRL High, 2200 to 3400 Hz), where singing (instability) problems are most likely to occur.
Single Sign On
A mechanism by which a user is authenticated and authorized for access to a variety of applications.
See Systems Network Architecture.
SONET (Synchronous Optical Network)
Special Billing Number (SBN)
A CRIS account number in the form of a fictitious billing telephone number (BTN) , which is used for non-WTN (working telephone number) specific products and services, such as unbundled loops and billable directory listings.
Specialized Mobile Radio System (SMRS)
A private radio system providing land mobile communications service to eligible persons on a commercial basis.
The range of electromagnetic radio frequencies used in the transmission of voice, data and television.
See Singing Return Loss.
See Subscription Services.
See Single Sign On.
SS7 Interconnection and Transport
A Verizon Wholesale service that offers Inter-exchange providers the ability to interconnect to Verizon's Signaling System 7 Network at one or more signal transfer points. Learn more.
Statement of Generally Available Terms and Conditions (SGAT)
File Q statement of the generally available terms and conditions for interconnection with an ILEC's network in the absence of a negotiated agreement.
Street Address Guide
A resource that provides the subscribing Local Service Provider (LSP) with all the valid address ranges to assist with Address Validation. Available in the Verizon North Region.
Sub-Account Billing Telephone Number (SBTN)
End user telephone number.
Subscriber Line Charge (SLC)
A monthly fee paid by a telephone subscriber to the local exchange carrier for part of the cost of installation and maintenance of the telephone wire, poles, and other facilities that link a residence to the telephone network. The SLC is one component of access charges.
Permits an end-user customer served from an Equal Access office to automatically route, without the use of an access code, the customer's local toll and long distance communications to an Interexchange Carrier of the customer's choice. The customer may also gain access to an alternate Interexchange Carrier by using the appropriate carrier access code; for example, 1010XXX.
A Verizon Wholesale application which enables InterLATA PIC, IntraLATA LPIC changes, Billing Name and Address (BNA) requests, DPIC/UNPIC requests, Merger/Acquisition requests, Data Gathering requests, and PIC/LPIC Database Verification requests.
A method of consolidating the monthly charges on multiple BTNs and/or SBNs. A summary account bill includes all related sub-account bills, with the charges totaled for payment at the summary account level. Also called a Summary Bill Account.
Summary Bill Account
A method of consolidating the monthly charges on multiple billing telephone numbers and/or sub-billing telephone numbers. A summary account bill includes all related sub-account bills, with the charges totaled for payment at the summary account level. Also called a Summary Account.
Superframe Format (SF)
The structure consisting of 12 DS1 frames (2316 bits) that utilizes the framing bit of twelve consecutive frames to provide terminal framing and signaling framing. The DS1 has 193 bit positions.
Suspend for Non-Payment (SNP)
Collections activities including suspension of outgoing calls (one-way) or suspension of incoming and outgoing calls (two-way).
A device that can be controlled to interconnect two circuits.
In the context of Frame or LAN switching, this refers to a device that filters, forwards and floods frames based on the frame destination address. The switch learns the addresses associated with each switch port and builds tables based on this information to be used for the switching decision. Some switches are high speed implementations of bridges where switching decisions are made by computer chips, usually an Application Specific Integrated Circuit (ASIC).
Switched Access Service
Switched Access Service provides for a two-way communications path capable of transmitting both voice and data services between an Interexchange Carrier location and the premises of its end-user customers. It includes access services that use the local exchange carrier's central office switches. Learn more.
One of a series of lines that can be interconnected through a switching center; a line on the Public Switched Telephone Network. Contrasts with leased line.
All dial-up telecommunications services including conventional residential services and Wide Area Telecommunications Services (WATS).
Switched Virtual Circuits (SVC)
A virtual link, with variable end-points, established through an ATM network. With a SVC, when the call is initiated, the user defines the end-points that are subsequently terminated at the end of the call. With a Private Virtual Circuit (PVC), the end-points are predefined by the network manager. A single virtual path may support multiple SVCs.
A form of communications where characters or bits are sent in a continuous stream, with the beginning of one signal continuous with the end of the preceding one; separation of one from the other requires the receiver to maintain a synchronization to a master timing signal.
Synchronous Optical Network (SONET)
An optical interface standard that allows different digital signals to be transported using a base transmission rate of 51.84 megabits per second OC-1 (Optical Carrier) / STS-1 (Synchronous Transport Signal). Higher rates are direct multiples of the basic OC-1 building block.
Synchronous Transport Signal - Level 1 (STS-1)
The basic SONET logical building block signal. STS-1 provides a total bandwidth of 51.84 megabits per second, including both overhead and payload. An STS-1 is capable of transporting a single DS3 in any configuration (for example, M13 formatted with multiplexed DS1s or clear channel 44.736 megabits per second) or up to the equivalent of 28 DS1s using SONET "VT" mappings. The interface to an STS-1 is a metallic-based electrical interface. Also,
Process by which Access users electronically submit orders or trouble administration information.
Systems Network Architecture (SNA)
A widely used network architecture.